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<p>Reports invalid usages of type hints.</p>
<p><b>Example:</b></p>
<pre><code>
from typing import TypeVar

T0 = TypeVar('T1') # Argument of 'TypeVar' must be 'T0'


def b(p: int) -> int:  # Type specified both in a comment and annotation
    # type: (int) -> int
    pass


def c(p1, p2): # Type signature has too many arguments
    # type: (int) -> int
    pass
</code></pre>
<p>Available quick-fixes offer various actions. You can rename, remove, or move problematic elements. You can also manually modify type declarations to ensure no warning is shown.</p>
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